The United States Air Force is investing $40 million to rebuild aging radar infrastructure across the Arctic as North American defence officials seek to preserve early-warning coverage in remote northern regions. The program focuses on replacing deteriorating protective structures at radar sites spread across northern Canada.
According to the US Air Force, the work will support the continued operation of the North Warning System, a joint US-Canadian defence network designed to detect low-flying aircraft and cruise missile threats approaching North America through polar routes.
The contract was awarded to Florida-based IAP World Services under a long-term agreement extending through May 2035. The Air Force Life Cycle Management Center’s Homeland Surveillance Branch at Hill Air Force Base is overseeing the programme.
The investment comes as military planners continue to treat the Arctic as a strategically important corridor for aerospace defence. The North American Aerospace Defense Command (NORAD) has repeatedly stated that northern radar coverage remains central to its warning and surveillance missions.
Arctic Radar Sites Face Decades of Weather Damage
The contract covers the production, transport, installation and disposal of 28-foot composite radomes that shield AN/FPS-124 surveillance radars from severe Arctic conditions. These structures are designed to protect sensitive equipment from icing, corrosion, strong winds, ultraviolet exposure and repeated thermal stress.
According to the information released by the Air Force, most of the existing radomes entered service between 1990 and 1992 as part of the replacement of the Cold War-era Distant Early Warning Line. More than three decades of continuous exposure to Arctic weather have significantly degraded many of the structures.
The AN/FPS-124 radar network forms part of NORAD’s broader North Warning System, which stretches across Alaska, Yukon, the Northwest Territories, Nunavut and Labrador. The system includes around 15 AN/FPS-117 long-range radars alongside nearly 40 short-range AN/FPS-124 sites.
While the larger AN/FPS-117 radars provide broad surveillance coverage, the shorter-range AN/FPS-124 systems are intended to detect low-flying aircraft and cruise missiles that can evade long-range radar because of terrain and radar horizon limitations.
According to NORAD, aerospace warning includes the detection and validation of aircraft, missiles and space-based threats approaching North America. The organisation describes its mission as a joint responsibility shared between the United States and Canada.
Remote Logistics Continue to Shape the Program
The Air Force first outlined the replacement effort in a presolicitation notice published in May 2025 before issuing a formal request for proposals in August that year. Four bidders competed for the contract.
Initial planning estimates reportedly placed the programme’s cost at around $21.7 million. The final value nearly doubled because of the operational challenges involved in transporting equipment and personnel to isolated northern locations.
Aircraft availability, seasonal weather conditions and narrow installation windows remain among the main logistical difficulties affecting the work. To manage those uncertainties, the Air Force combined fixed-price and cost-reimbursement contract structures.
According to the contract announcement, fiscal year 2025 and 2026 funding obligations currently amount to approximately $4.6 million. The replacement work is expected to proceed gradually through future task orders rather than through a full simultaneous overhaul of the network.
The unattended radar sites operate remotely through autonomous command links. Radar data is processed locally before being transmitted through satellite communications into NORAD command systems connected to operations centres at Elmendorf Air Force Base and Canadian Forces Base North Bay.
NORAD states that the Arctic radar network continues to play a major role in aerospace warning and air defence operations while newer over-the-horizon and distributed sensing technologies remain under development.
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